Dilution and Molarity Calculations

1 - The higher the molarity, the ________ the solution

• more concentrate

• less concentrated

Tags

NGSS.HS-PS1-5

2 - True or False?

The higher the concentration of a solution the less solutes it has in it.

• True
• False

Tags

NGSS.HS-PS1-5

3 - Convert 25 mL to liters (L)

• 0.025

• 0.25

• 2.5

• d) 0.0025

4 -What is the molarity of a solution made by adding 1.565 moles of PbNO₃ to 500 mL?

***Change the mL to L before calculating

• 300. M
• 31.3 M
• 3.13 M
• 1.56 M

5 - Calculate the molarity of the following solution:  1.0 mole of KCl in 750.0 mL of solution.

***Change the mL to L before calculating

• 0.750 M
• 99 M
• 1.3 M
• 2.0 M

6 - Which of the following is the Dilution Formula?

• V₁M₁ = V₂M₂

• M = m/V

• V = mT

• PV = nRT

7 - A dilution is when

• solute is added to the volume of solution

• water is added to the volume of solution

• solute is removed from the volume of solution

• water is removed from the volume of solution

8 - If 2.5 L of a 4M solution of FeCl₃ is diluted to a volume of 6 L by the addition of water, what is the molarity of the diluted solution?

• 2.5 M

• 4.17 M

• 6.25 M

• 1.67 M

9. 9-   If a chemist starts with 25 mL  of 6M HCl and prepares a new solution with a concentration of 0.5M, what with be the new volume?

• 200 mL

• 500 mL

• 300 mL

• 400 mL

10 - A chemist dilutes 25 mL of a 2M solution to make 500 mL of new solution.  What is the molar concentration of the new solution?10

• 0.1 M

• 0.2 M

• 0.5 M

• 1.0 M